Questions & Help>Questions

Define an extra function for all the phoenix modules

/phoenix
alsaraha

alsaraha

I want to use a function I defined myself put_assoc_new/4. I want it to be available like how put_assoc/3 is available, by adding import Ecto.Changeset, I don’t want to add extra imports if that is possible.

if I can add it to the Ecto.Changeset module that would be great.

what are your thoughts?

2 comments
/phoenix
447 2

Showing Posts 1 to 2

dimitarvp

dimitarvp

You can’t extend a library that’s not yours. :slightly_smiling_face:

You can define your own helper in your project and use it from there.

1
Post #1
jeremyjh

jeremyjh

I created use modules for schemas and context modules in my application to include things like this.

For example

defmodule MyApp.Schema do
  defmacro __using__(_) do
    quote do
      use Ecto.Schema
      import Ecto.Changeset
      alias Ecto.Changeset
    
      import MyApp.ChangesetHelpers
    end
  end
end

defmodule MyApp.ChangesetHelpers do
  def put_assoc_new ...
end 

defmodule MyApp.User do
  use MyApp.Schema
  schema "users" ...
end
5
Post #2
— All posts loaded —

Where Next? Top

View thread on forum (has 2 replies!)
phoenix
Home Questions & Help>Questions
6 408 2
Last post
REPLY VIEW THREAD WITH 2 POSTS

Trending in Questions Top

stjefim
Questions & Help>Questions

Durable Workflow Execution (temporal alternative for elixir)
Hello! Suppose you are building workflow (order / task / payment) processing system with the following requirements: Each workflow con...
/oban#workflow#durable-execution
23 7267 11
New
water
Questions & Help>Questions

Opensource Projects Using AshFramework as Learning Resource
I’m aware of 2 such projects, are there others? git: GitHub - team-alembic/realworld: A fullstack Phoenix LiveView application with back...
/ash#learning-resources
24 2108 9
New
peck
Questions & Help>Questions

Load Testing LiveViews With Tsung (or other tools?)
Hi everyone. My team and I have been working on a fairly modest app based around video streaming and chat, but we’ve landed a customer t...
/phoenix#tsung#load-testing#liveview
8 1362 2
New
bradley
Questions & Help>Questions

Are there any generic KMS libraries out there?
I really like the adapter patterns that ecto, nebulex, waffle, etc. use and would love find something similar for a key management servic...
#libraries#hex-packages
1 953 3
New
unaware8150
Questions & Help>Questions

What could be a clean way to handle constant strings across a codebase?
Hello folks! So at work, we are seeing some situations where we have to define some “fixed” strings that are used across the codebase in...
#learning-elixir
22 559 20
New
leoschweizer
Questions & Help>Questions

Shared per-node concurrency across queues in Oban Pro
Hi, we run different LLM models across a cluster, with each node loading a configurable subset. Model-specific queues let nodes consume ...
/oban#oban-pro
2 449 5
New
csmr
Questions & Help>Questions

Pick apart my gameserver with Phoenix Liveview?
Hi all, I’m new here and would like to hear peoples views on my Elixir/Phoenix based game-engine! :smiley: Mutonex gamedesign was finish...
/phoenix#ecto#gamedev#genserver#websocket
0 161 4
New

Other Trending Topics Top

mudasobwa
News>Announcing

Yoke - the DeepSeek Harness (former DSH)
I fully migrated to my own harness from Anthropic/Gemini and I think it’s time to share it. Welcome DSH, the DeepSeek Harness, fully writ...
#library#projects#llm#deepseek#llms
31 4437 36
New
KristerV
Chat & Discussions>AI / LLMs

State of developing agents with Elixir (not coding agents)
Hey. Is there anyone here who creates agents in their apps? Not talking about using agents, but creating them. I’m finding it pretty diff...
#agent#ai#llm#dev-tools#ai-tools
34 5131 24
New
jimsynz
News>Announcing

Beam Bots - Resilient Robotics on the BEAM
Beam Bots (or just BB for short) is a framework for building fault-tolerant robotics applications in Elixir using familiar OTP patterns. ...
/beam-bots#library#robotics#bb
122 3775 29
New
webofbits
Chat & Discussions>AI / LLMs

How much do you still code yourself?
With AI doing more of the implementation work, I’ve been wondering how much coding I should deliberately keep doing myself. My main conc...
#ai
224 3365 92
New
budgie
Chat & Discussions>Discussions

How does Elixir keep going?
I love Elixir. It’s one of 2 programming languages I’ve ever fallen in love with. But I don’t use it anymore. Serverless was the promis...
#language#serverless
176 3123 63
New
ausimian
News>Announcing

Emily - A new MLX-based backend for Nx
Emily is an Elixir library that runs Nx computations on Apple’s MLX. Install it as the default Nx backend and Nx, defn, Axon, Nx.Serving,...
#library#libraries#emily
63 3147 20
New
Back to top

Latest Phoenix Threads

Phoenix Forum ❯

Questions & Help>Questions

Questions Questions ❯

Latest on Elixir Forum

Elixir Forum ❯

Sponsor Spotlight

Dashbit

Build Elixir applications with speed and confidence.

Our Sponsors

Dashbit

Build Elixir applications with speed and confidence.

Coders51

We build reliable cloud platforms for business-critical systems.

AppSignal

Catch errors, track performance, monitor hosts and more.

Honeybadger

Error tracking, logs, uptime, and Just Enough APM. Built for developers.

Code Sync

Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Manning

Master modern tools, write cleaner code, and tackle real-world challenges.

WyeWorks

**Building the future of software with AI, trust, and human connection.**

Software Mansion

The team behind Membrane, Popcorn, LiveDebugger. Available for hire.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Forums

Popular Tags

Our Sponsors

Dashbit

Build Elixir applications with speed and confidence.

Coders51

We build reliable cloud platforms for business-critical systems.

AppSignal

Catch errors, track performance, monitor hosts and more.

Honeybadger

Error tracking, logs, uptime, and Just Enough APM. Built for developers.

Code Sync

Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Manning

Master modern tools, write cleaner code, and tackle real-world challenges.

WyeWorks

**Building the future of software with AI, trust, and human connection.**

Software Mansion

The team behind Membrane, Popcorn, LiveDebugger. Available for hire.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement

Options

Thread Display Mode




Thread Preview

Skip Thread Previews